code: def is_fast(request):
      return request.config.getoption("--fast")
  
file_path: m2cgen/tests/conftest.py
imports: import io
  import pickle
  import pytest
  from sklearn.linear_model import LinearRegression
  from tests.utils import get_regression_model_trainer, tmp_dir
label_desc: Use image node_id 2 for calling a global function with example usage: is_fast(request) and returns: request